u(x)=-3x+9

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Solution for u(x)=-3x+9 equation: 


Simplifying
u(x) = -3x + 9

Multiply u * x
ux = -3x + 9

Reorder the terms:
ux = 9 + -3x

Solving
ux = 9 + -3x

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Divide each side by 'x'.
u = 9x-1 + -3

Simplifying
u = 9x-1 + -3

Reorder the terms:
u = -3 + 9x-1

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